Honda Eu2000i GENERATOR EXTENDED RUN FUEL GAS CAP Features: * Use this gas cap to extend the range of your generator with a external tank. * Knurled for easy grip when opening or closing. * CNC machined from a solid piece of HIGH QUALITY 6061 T6 ALUMINUM. * The cap has a 1/4" female thread inside. Use a 1/4" brass male fitting with a hose barb that screws into the cap * Made in the USA. Now you want have to wake up in the middle of the night to add more fuel.